History of Computers

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Transcript of History of Computers

History of Computers Mechanical Computers The abacus is still used to solve basic computation in some societies. Slide the beads up and down on the rods to add and subtract. The Pascaline could add and subtract two numbers directly and multiply and divide by repetition. Gottfried Wilhelm von Leibnitz’s 1674 A.D. Joseph-Marie Jacquard's 1804 A.D. Tim Varsanyi Abacus Pascaline Blaise Pascal's 1642 A.D 2700-2300 BC Stepped Reckoner Leibnitz’s Stepped Reckoner could add, subtract, multiply and divide Jacquard Loom